Process for the preparation of bis-N-chloramides

Abstract

Bis-N-chloramides of saturated aliphatic dicarboxylic acids are prepared by chlorinating a saturated aliphatic dicarboxylic diamide, the aliphatic residue of which has 4 to 40 carbon atoms, in an aqueous inorganic acid medium, at a temperature between 0° and 40° C.; the chlorination is advantageously carried out in presence of an inorganic salt.

What is claimed is: 
     
       1. A process for the preparation of a bis-N-chloramide of a saturated aliphatic dicarboxylic acid, which comprises chlorinating a saturated aliphatic dicarboxylic acid diamide of the formula   H.sub.2 N-CO-X-CO-NH.sub.2     wherein X is an aliphatic residue having 4 to 40 carbon atoms, with chlorine in a medium consisting essentially of an aqueous inorganic acid, at a temperature between 0° and 40° C.   
     
     
       2. The process of claim 1 in which X is a straight-chain aliphatic residue. 
     
     
       3. The process of claim 1 in which X is a branched-chain aliphatic residue. 
     
     
       4. The process of claim 1 in which said chlorination is carried out in the presence of an inorganic salt. 
     
     
       5. The process of claim 1 in which said diamide is chlorinated in the form of a dilute hydrochloric acid suspension. 
     
     
       6. The process of claim 1 in which said diamide is chlorinated in the form of a suspension in dilute hydrochloric acid saturated with sodium chloride.